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Finding the Fourth Proportional to 30,507.58, 45,756.67 and 8,322.76

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Solution

The fourth proportional to 30,507.58, 45,756.67 and 8,322.76 is: 12,482.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,507.58 : 45,756.67 = 8,322.76 : x
  2. Step 2: Convert to fraction form
    30,507.58/45,756.67 = 8,322.76/x
  3. Step 3: Cross multiply
    30,507.58x = 45,756.67 × 8,322.76
  4. Step 4: Simplify right side
    30,507.58x = 380,821,782.81
  5. Step 5: Solve for x
    x = 380,821,782.81/30,507.58
  6. Step 6: Final answer
    x = 12,482.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.